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Note 7 - Segment and Related Information (Tables)
 3 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Three Months Ended December 31:
  
2016
    
2015
  
                 
Sales
 
 
 
 
 
 
 
 
Test and Measurement
   $
827,066
     $
1,376,872
  
Industrial Hose
    
1,529,860
      
-
  
    $
2,356,926
     $
1,376,872
  
                 
Income (Loss) Before Provision for Income Taxes
 
 
 
 
 
 
 
 
Test and Measurement
   
(45,409
 )    
389,578
  
Industrial Hose
    
389,637
      
-
  
Unallocated Expenses
   
(649,934
 )    
(436,767
 )
    $
(305,706
 )   $
(47,189
 )